Patent · US Active

Dynamically biased inductor

US9368267B2 · kind B2 · utility

0Cited by

16References

16Claims

0Family size

Assignee

SMA Solar Technology AG · DE

Inventors

Michael Viotto · Kassel, DE
Klaus Rigbers · Oettingen, DE
Jens Friebe · Vellmar, DE
Peter Zacharias · Kassel, DE

Key dates

Filing date	Aug 26, 2013
Grant date	Jun 14, 2016
Priority date	—
Expiry date	Oct 12, 2033

Classification

Technology area (CPC H)Electricity
CPC primaryH01F2003/103
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An inductor apparatus includes an inductor winding, a core defining a magnetic circuit for a magnetic flux generated by a current flowing through the inductor winding, at least one permanent magnet magnetically biasing the core by its permanent magnetization, and a magnetization device operable for adjusting a desired magnetization of the permanent magnet. The at least one permanent magnet is arranged within the magnetic circuit of the magnetic flux generated by the current flowing through the inductor winding. The magnetization device includes a magnetization winding and a circuitry configured to subject the magnetization winding to magnetization current pulses, thereby generating at a location of the permanent magnet a magnetic field which is able to change the permanent magnetization of the permanent magnet.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.